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<a name="boost_asio.reference.posix__basic_descriptor.basic_descriptor"></a><a class="link" href="basic_descriptor.html" title="posix::basic_descriptor::basic_descriptor">posix::basic_descriptor::basic_descriptor</a>
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<p>
          <a class="indexterm" name="boost_asio.indexterm.posix__basic_descriptor.basic_descriptor"></a> 
Construct
          a descriptor without opening it.
        </p>
<pre class="programlisting">explicit <a class="link" href="basic_descriptor/overload1.html" title="posix::basic_descriptor::basic_descriptor (1 of 5 overloads)">basic_descriptor</a>(
    const executor_type &amp; ex);
  <span class="emphasis"><em>» <a class="link" href="basic_descriptor/overload1.html" title="posix::basic_descriptor::basic_descriptor (1 of 5 overloads)">more...</a></em></span>

template&lt;
    typename ExecutionContext&gt;
explicit <a class="link" href="basic_descriptor/overload2.html" title="posix::basic_descriptor::basic_descriptor (2 of 5 overloads)">basic_descriptor</a>(
    ExecutionContext &amp; context,
    typename constraint&lt; is_convertible&lt; ExecutionContext &amp;, execution_context &amp; &gt;::value, defaulted_constraint &gt;::type  = defaulted_constraint());
  <span class="emphasis"><em>» <a class="link" href="basic_descriptor/overload2.html" title="posix::basic_descriptor::basic_descriptor (2 of 5 overloads)">more...</a></em></span>
</pre>
<p>
          Construct a descriptor on an existing native descriptor.
        </p>
<pre class="programlisting"><a class="link" href="basic_descriptor/overload3.html" title="posix::basic_descriptor::basic_descriptor (3 of 5 overloads)">basic_descriptor</a>(
    const executor_type &amp; ex,
    const native_handle_type &amp; native_descriptor);
  <span class="emphasis"><em>» <a class="link" href="basic_descriptor/overload3.html" title="posix::basic_descriptor::basic_descriptor (3 of 5 overloads)">more...</a></em></span>

template&lt;
    typename ExecutionContext&gt;
<a class="link" href="basic_descriptor/overload4.html" title="posix::basic_descriptor::basic_descriptor (4 of 5 overloads)">basic_descriptor</a>(
    ExecutionContext &amp; context,
    const native_handle_type &amp; native_descriptor,
    typename constraint&lt; is_convertible&lt; ExecutionContext &amp;, execution_context &amp; &gt;::value &gt;::type  = 0);
  <span class="emphasis"><em>» <a class="link" href="basic_descriptor/overload4.html" title="posix::basic_descriptor::basic_descriptor (4 of 5 overloads)">more...</a></em></span>
</pre>
<p>
          Move-construct a descriptor from another.
        </p>
<pre class="programlisting"><a class="link" href="basic_descriptor/overload5.html" title="posix::basic_descriptor::basic_descriptor (5 of 5 overloads)">basic_descriptor</a>(
    basic_descriptor &amp;&amp; other);
  <span class="emphasis"><em>» <a class="link" href="basic_descriptor/overload5.html" title="posix::basic_descriptor::basic_descriptor (5 of 5 overloads)">more...</a></em></span>
</pre>
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